Hi Chris,
> No, there's one regexp on a rarely-used backend. > > Here's our (redacted) config: > https://gist.github.com/chrisotherwise/cfdd04216d622437f5fe > > Here's the output from haproxy -vv: > https://gist.github.com/chrisotherwise/23067a39fd59449d52f1 > > Here's the output from sar when we were not too busy: > https://gist.github.com/chrisotherwise/b2f22379eb5192ea5b45 > > Here's the output from a pidstat of haproxy: > https://gist.github.com/acme/02f065091d9f246ceaa3 Ok, 2 suggestions here: - use keep-alive, replace "option httpclose" with "option http-keep-alive" and configure "timeout http-keep-alive" to some seconds (the optimal value depends on your application, try starting with 5s) - you are using Linux 3.5, try enabling splicing with "option splice-auto" Those 2 suggestions should decrease the load a lot. > We have 3 x 1Gb NIC. Things get hot at around 1.1Gb/s This may be another problem. What NIC are we talking about here exactly? Moving this to a 10Gig NIC could help as well (especially if those are not high end 1Gig NICs). Regards, Lukas
